Some say that God is eternally existent. Some theorists take this to mean that God is timeless whether it is past, present, and future just do not apply when we are talking about God. Others hold, instead, that eternal existence means that God exists at all times. In other words, if God is eternally existent, he has already existed for an infinite amount of time, and he will continue to exist for an infinite amount of time. However, his existence never began and will never end. Even though most of the ideas are from Nontraditional Religious Experience such as Radical Theology, these people perceive that God is the aspect of reality. Soren Keirkegarrd said that “If God does not exist, it would of course be impossible to prove it; and if he does exist it would be folly to attempt it”. Paul Tillich who believes that “God becomes almost some things to which we direct our lives”
Here is some proof show that god is existed. God not only has revealed himself in what can be observed in nature, and in human life, but He has even more specifically shown himself in the Bible. Archeological find in northern Israel in August 1993 confirmed the existence of King David, author of many of the Psalms in the Bible. The Dead Sea Scrolls and other archaeological discoveries continue to substantiate the historical accuracy of the Bible. The Bible was written over a 1500-year span, by 40 different authors, in different locations and on separate continents, written in three different languages, covering diverse subject matters at different points in history. Yet there is surprising consistency in its message. Throughout the entire Bible the same message appears Jesus Christ is the clearest, most specific picture of God. Jesus is able to perform miracles. He healed people who blind, crippled, deaf, even raised a couple of people from the dead. He had power over objects such as created food out of thin air, enough to feed crowds of several thousand people. He performed miracles over nature, as he walked on top of a lake, commanding a raging storm to stop for some friends. People everywhere followed Jesus, because He constantly met their needs, doing the miraculous. He said if you do not want to believe what I'm telling you, you should at least believe in me based on the miracles you're seeing.
The most conclusive proof that Jesus is equal to God was Jesus' most closely scrutinized miracle, his own resurrection from the dead. Jesus said that three days after His burial He would come back to life. On the third day after His crucifixion, the almost two-ton boulder in front of His tomb was catapulted up a slope. The guard of well-trained Roman soldiers saw a blinding light and an angel. The tomb was empty, except for the burial clothes that had been wrapped around Jesus' body. Over the years, legal, historical and logical analysis has been applied to Jesus' resurrection and the most feasible conclusion still is that Jesus rose from the dead.
Another philosopher like Descartes who supports the existence of God by saying that "Whatever is contained in a clear and distinct idea of a thing must be predicated of that thing; but a clear and distinct idea of an absolutely perfect Being contains the notion of actual existence; therefore since we have the idea of an absolutely perfect Being such a Being must really exist."
Causality Argument also plays a vital role here. It states that only nothing comes from nothing and everything else comes from something. Everything leads back to a more original form. If, however, one thing was caused by another, there would be an infinite chain of cause and effect, which would be impossible. Therefore it is necessary to admit a first efficient cause, to which everyone gives the name of God
However, there are still some philosophers who do not agree that god does exist so here are some of their thoughts. They have come up with some arguments such as Ontological argument state that if we think of God, it does not mean that God does exist since we do not have any physical proof. Another strong argument is the Cosmological Argument argued that for the existence of God that claims that there must be an ultimate casual explanation for why the universe as a totality exists. Here, Big Bang theory is the most suitable one since at least we can prove something be scientific. We can not blindly say that it was God who created. The most powerful that proof the inexistence of God is the Counter argument says that without opposites, the Yin and Yang, life would not be possible at all. Without opposites we would also have no freedom of choice. Therefore God does not interfere. Let imagine two armies approaching, they are fighting over something as simple as food. Both parties are praying to God for help. Who is God to help? And if God does not interfere could we reasonably conclude that He does not care. Therefore, can we say that God does not exist?
To conclude this assignment, in order to say whether or not God is existed is still a question mark as for me as agnosticism states that can neither prove that God is existed nor disprove. Since we must belief what we have face by ourselves this can be called mysticism. Human beings are able to choose what they want to belief or autonomy. However for the atheistic who does not believe in god may not believe that god is existed as well so there is no point talking about them since in order to find whether or not god is existed one should first believe in god
There are quite numbers of the arguments for both the sides, but to say whether or not God is existed. It depends on individual belief. Human beings have autonomy. However, existence of God is agnosticism that can neither prove that God is existed nor disprove.
References
http://www.self_realization.com/prooffor.htm#The%20Design%20Argument
http://en.wikipedia.org/wiki/The_nature_of_God_in_Western_theology
http://www.everystudent.com/features/isthere.html
http://www.antelope_ebooks.com/RELIGIOUS/whyme.html
Philosophy, A Text with Reading, seventh edition, Manuel Velasquez, published by Wadsworth Publishing Company